Originally Posted by Adrian Whareham
P0100 mass or volume air flow A circuit malfunction
P0201 cylinder 1 injector circuit malfunction
P0301 cylinder 1 misfire
P0110 IAT sensor 1 circuit malfuntion
It looks as if the injector on number 1 cylinder is giving me the problem although they all sound the same as in youtube video , I am going to remove the injectors and test them , will let you know what I find
I had the same problem not to long ago, and it ended up being a clogged cat. I replaced the coil and plug because it's cheap and easy to removed. I could have reused the #1
plug, but again it's cheap. I even cleaned the Maf, but after a few days the same codes comes back. At the time, mine only comes back at a certain rpm under full load, then the ECM would need to be reset to be able to drive the car smooth again.
I know my car has good compression due to previous (headwork) and I'm getting adequate spark, so my #1
injector is what is left to replace and so I did. Same codes came back after triggering it again under full [email protected]
You can check if the maf is still ok, with a Digital Muti meter. However, in my case I have a fresh Maf so cross that off the list. I also recently replaced my fuel filter and my F. pump was still running good.
I even replaced my cam & crank sensor, just because it was cheap and it was one of the many things that could cause this. Same codes triggered again. Finally, I tapped my cat converter and noticed that the honeycomb inside was broken in pieces. I could have drilled through my exhaust and whipped out my camera to view the condition of the honey comb , but no need.
Long story short, got a replacement from Magnaflow and never looked back.